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为了研究依兰矿区首采中煤层自燃特性,指导建立矿区内的防灭火工作,通过试验方法,进行了首采中煤层的工业分析、全硫、煤的自燃倾向性、煤的最短自然发火期、煤的着火点、煤尘爆炸行测试,建立了首采中煤层自然发火指标体系,通过升温氧化实验测试出油页岩析出的有毒有害气体,同时测定出油页岩的含硫量大、吸氧量大,是依兰矿区防灭火工作应密切关注的环节,同时提出液氮防灭火方法。
In order to study the spontaneous combustion characteristics of the first coal seam in the Yilan mining area and to guide the establishment of fire prevention and fire prevention work in the mining area, the industrial analysis of the first mining coal seam was carried out by the test method. The sulfur spontaneous combustion tendency of coal and the spontaneous combustion of coal , The ignition point of coal and coal dust explosion test. The index system of spontaneous combustion of coal seam in the first mining was established. The toxic and harmful gases precipitated from the oil shale were tested by the temperature rising oxidation experiment, and the sulfur content of the oil shale was determined. Large amount of oxygen, Yilan mine fire prevention work should be closely watched the link, while proposed liquid nitrogen fire fighting methods.